Connection for gas-mains.



s. B. SHELDON =& K, c. noxnz -CONNECTl0N FOR-GAS MAINS. APPLINTION FILEDAPR. 1. m5.

1,230,808; Patmu 19,1917

SAMUEL B. SHEIJJON AND KINNEY C. HOXIE, C'F DULUTH, Mm'NESOTL T0 allwhom may concern:

Be it known that we, SAMUEL BISHELDON and KINNEr C. Hoxm, citizens ofthe United States, and residents of Duluth, in' the county of St. Louisand State of Minnesota,

have invented certain new and useful Im- In the construction ofby-product co l e ovens it is customary to use two gas mains,

gas pipes are accessible for examination and one for rich gas and onefor lean gas. From each oven there is but one exit pipe for gas;

consequently it becomes necessary to install upon this gas pipe twovalves with a con- I necting pipe between, which valves control theinlet of either the rich. or the lean gas to their respective mains. Forstructural reasons it is necessary that these mains be parallel'and butashort distance from each other; and as a consequence, troubles havearisen owing to-expansion and contraction of the gas.v pipe, commonlyknown as the v collecting pipe, which connects --the two gas mains.Furthermore, owing to deposit-- oi pitch. and tar in the connectingpipe, it

acent gas mains, upwardly-extendn1g:bell connections on said .mains,said mains pros is necessary that convenient means should be providedwhereby access to the interior of the pipe and the valves can be readilyhad. Our invention comprises anarrangement of parts wherebythediificulties heretofore experienced by expansion are overcome; the

valves are 'abcessible both for observation and removal, and the entireinterior of the cleaning.

Our invention will be more readily under stood by reference to thedrawing wherein the-figure is a transverse section through two gas mainsand our novel connection between the same.

Referring more particular-1V to the drawing it will be seenthat weprovide adjacent rich and lean gas mains 10, 11. Mounted upon the mainsare valve housings 12, 13, having at their lower ends removable valveseats 14, upon which-the valves 15, may rest. These valves are connectedto the stems 16, and suitable operatingineans may be employed:Eoractuating the valves. The

CONNECTION non ens-Mains,

Specification of Letters Patent.

Patented June 19,1917.

Application filed April 1, 1915, scrim No. 1 8 ,601.

nections 17, adapted engage with the spigot ends 18,- of the connecting.pipe. This I trouble caused by the expansion of the connecting pipebetween the two valve casings and the difierence of expansion betweenmains 10 and 11, the bell and spigot joints between the casings and theconnecting pipev are packed with clay 21, or similar material;-

which will not afford sufiicient resistance to expansion and contractionto-cause breakage I of the parts. I

The construction is so arranged that all of the parts are readilyaccessible for clean ing' or repairathe parts will'not become broken dueto unequalexpansion and the structural advantages heretoforesoughtjareattained; Obviously the construction is cation.

We claim:

'pable of much modification and such modifications as are within thescope of our claims we consider within the spirit of our inven- 1 Inagas plant, the combination'of ad I vided with valve seats within saidbellconnections, valves acting within said bell connections and adaptedto coiiperate with said" ed to form spigot joints therewith, said pipeprovided with an opening permitting inspection and cleaning.

2. In a gas plant, the combination of 'adjacent gas mains, a valvecasing mounted on each of saidmains, eachof said casings being providedwith a bell-mouthed extension, said extensions projecting toward eachother, and a U-shaped pipe connectingsaid extensions and having spigotends, said U- shaped pipe being provided with a cleaning opening,substantially as described.

Signed at Duluth, St. Louis county,Minnesota, this 26th day of March,1915.

. SAMUEL B; SHELDON.

KINNEY C. HOXIE; Witnesses:

ARTHUR E. Mam, Gnon'cn A. FLINNI

